Lamp for road vehicles



' NOV. 6, 1934. J, A STEVNS 1,979,650

LAMP FOR ROAD VEHICLES Filed Jan, 18, 1932 Patented Nov. k6, 1934 UNITED STATES PATENT OFFICE Application January 18, 1932, Serial No. 587,356 In Great Britain June 11, 1931 2 Claims.

This invention relates to lamps for road vehicles and has for its object to provide a lampparticularly a head lamp-which will minimize or eliminate dazzle to oncoming vehicles and 5 will not diminish the light projected.

A further object of the invention is to provide a lamp in which the light bulb and its socket will be readily accessible.

The present invention comprises a vehicle lamp l0 having a parabolic reflector wherein is provided a reflector arranged to deilect the upper dazzle producing rays downwards onto the road in front of the lamp.

The upper portion of the lamp is preferably provided with a substantially horizontal opening giving access to the interior of the lamp and provided with a hinged or sliding cover, which when hinged may be hinged to the front edge of the opening at or near the upper edge of the front reflector or to any other suitable portion of the opening.

A manner of carrying out the invention is illustrated by the accompanying drawing wherein Figure 1 is a front elevation, Figure 2 is a sectional elevation and Figure 3 a plan of the improved lamp.

In the drawing a is the casing of the lamp, b the parabolic reflector and c the lamp bulb, all of which may be of any suitable construction.

At the front of the lamp is provided a reflector or hood r, inclined downwardly from a horizontal front top edge al formed on the casing of the lamp, the lower edge of the reflector being extended downwards suilciently to out olf all the upper rays which produce dazzle on the driver of an oncoming vehicle, and so that by cutting oil such rays the useful rays of the lamp will not be diminished.

The reilector r is connected by a hinge a2 to the front top edge a of the lamp and any suitable means may be provided for adjusting the angle of inclination of the reflector.

The surface of the reflector or hood r is curved upwards transversely so as to cause rain falling thereon to drain away at the sides of the lamp,

and this curvature also causes the downward reected rays to be inclined in opposite directions so that the portion of the road illuminated by these rays will extend somewhat beyond the sides of the vehicle.

The lamp casing and parabolic reilector are each provided with a horizontal opening at the top thereof which is indicated by the dotted line a3 and extends to the front edge al, and

this opening is provided with a cover a4 hinged (Cl. 24U-41.35)

at the front edge al and provided at its rear edge with a fastening a5. The cover a4 is curved upwards in suoli` a manner as to correspond to the curvature of the parabolic reector and to cause rain falling thereon to drain away without enterl0 ing the lamp.

By releasing the fastening a5 the cover a4 can be turned about its hinge to give access to the interior of the lamp for cleaning purposes and for the renewal of the lamp bulb c when 05 required.

In the preferred construction of the lamp the reilector or hood 1' and cover a4 are formed in one piece or rigidly connected together and so as to be turnable simultaneously about a com- 10 mon hinge a2.

The lamp by reason of the covered horizontal opening will comprise a casing of cylindrical cross section with a top segmental portion removed. u

A lamp made in accordance with the present invention can be made of pleasing appearance, and by reason of the top opening is very convenient in use.

I claim:

1. A vehicle lamp comprising a casing, a parabolic reflector mounted in the casing, a lens mounted in the front of the reflector, a hood extending over the front of the lens, and a hinged cover, the upper portion of the reflector being cut away horizontally in a plane parallel to the axis of the lamp and the cover hinged to a hinge extending across the front edge of the cut away portion, the cover also forming a continuation of the hood, and having a attened curved transverse section of a curvature different from that of the circular section of the parabolic reflector.

2. A vehicle lamp comprising a casing, a parabolic reflector mounted in the casing, a lens mounted in the front of the reflector, a hood extending over the front of the lens, and a hinged cover, the upper portion of the reilector being cut away horizontally in a plane parallel to the axis of the lamp and the cover hinged to a hinge extending across the front edge of the cut away portion, the cover also forming a continuation of the hood, and having a flattened curved transverse section of a curvature different from that of the circular section of the parabolic reflector 105 and of the hood.

JOHN ALFRED STEVENS. 

